Galaxy S21 Ultra 5G • Unlocked vs iPhone 12 • Unlocked

The Samsung Galaxy S21 Ultra 5G, released in January 2021, and the Apple iPhone 12, launched in October 2020, represent distinct approaches to flagship smartphone design and functionality. While both devices offer premium experiences, they differ significantly in their operating systems, display technology, and camera capabilities. The Galaxy S21 Ultra operates on Android, offering a customizable interface, whereas the iPhone 12 runs on Apple's iOS, known for its streamlined user experience.

When considering the long-term usability of these devices, several factors contribute to their expected lifespan, including software support and physical durability.

• Release Timeline: The iPhone 12 was released in October 2020, making it slightly older than the Galaxy S21 Ultra 5G, which debuted in January 2021. This difference in release dates can influence the duration of future software support.
• Software Longevity: Apple typically provides iOS updates for its devices for five to six years from their release. The iPhone 12, originally shipping with iOS 14, has received updates up to iOS 26.4 as of March 2026, suggesting continued support for a few more years. Samsung generally offers four years of Android OS updates and five years of security updates for its flagship devices. The Galaxy S21 Ultra, launched with Android 11, has received updates to Android 14 and is expected to continue receiving security patches.
• Repairability: The iPhone 12 received an iFixit repairability score of 6 out of 10, indicating that many components are modular, though some repairs, particularly for cameras and screens, may require proprietary software from Apple. Information on the Galaxy S21 Ultra's specific repairability score is less widely available, but Samsung devices generally offer moderate repairability. Both devices feature robust build materials designed to withstand daily use.

The performance of a smartphone is crucial for handling demanding applications, multitasking, and overall system responsiveness. Both devices offer capable performance for their respective ecosystems.

• System Responsiveness: The iPhone 12 is powered by a processor designed for efficient performance, ensuring smooth navigation and quick app launches within the iOS environment. Users generally experience consistent responsiveness across various tasks. The Galaxy S21 Ultra 5G features a powerful octa-core processor, providing a fluid experience for complex applications and heavy multitasking on the Android platform.
• Multitasking and Storage: The iPhone 12 typically comes with 4GB of RAM, which is optimized by iOS to manage multiple applications effectively. Storage options for the iPhone 12 include 64GB, 128GB, and 256GB. The Galaxy S21 Ultra 5G offers more substantial RAM configurations, with options for 12GB or 16GB, facilitating extensive multitasking and resource-intensive applications. It also provides larger storage choices, ranging from 128GB to 512GB.
• Battery Behavior: The iPhone 12 has a battery capacity of 2815mAh. Its battery life can be influenced by 5G usage, with some reports indicating shorter durations when connected to 5G networks. The Galaxy S21 Ultra 5G is equipped with a larger 5000mAh battery, which generally translates to extended usage times for most users.

The display is a primary interface for smartphone interaction, and both devices offer high-quality viewing experiences with distinct characteristics.

• Display Technology and Resolution: The iPhone 12 features a 6.1-inch Super Retina XDR OLED display with a resolution of 2532x1170 pixels, resulting in a pixel density of 460 pixels per inch (ppi). This OLED technology provides deep blacks and vibrant colors. The Galaxy S21 Ultra 5G boasts a larger 6.8-inch Edge QHD+ Dynamic AMOLED 2X display, offering a higher resolution of 3200x1440 pixels and a pixel density of 515 ppi.
• Brightness and Clarity: Both displays support HDR content. The iPhone 12 offers a typical maximum brightness of 625 nits and a peak HDR brightness of 1200 nits, providing good visibility in various lighting conditions. The Galaxy S21 Ultra 5G can reach a peak brightness of 1600 nits, which can be beneficial for outdoor use and HDR content viewing.
• Refresh Rate: A key differentiator is the refresh rate. The iPhone 12 has a standard 60Hz refresh rate. The Galaxy S21 Ultra 5G features an adaptive refresh rate that can dynamically adjust from 10Hz to 120Hz, contributing to smoother scrolling and more fluid animations, while also conserving battery life when a high refresh rate is not needed.

Camera systems are a significant aspect of modern smartphones, and both the Galaxy S21 Ultra 5G and iPhone 12 offer advanced photographic capabilities.

• Rear Camera Systems: The iPhone 12 features a dual 12MP camera system, including a wide-angle lens with an ƒ/1.6 aperture and optical image stabilization, and an ultra-wide lens with a 120° field of view. The Galaxy S21 Ultra 5G offers a more versatile quad-camera setup. This includes a 108MP wide-angle lens with optical image stabilization, a 12MP ultra-wide lens, and two 10MP telephoto lenses providing 3x and 10x optical zoom capabilities, respectively.
• Photography Performance: Both devices excel in everyday photography. The iPhone 12's computational photography, enhanced by its processor, delivers strong image quality, particularly in low-light conditions with its Night mode. The Galaxy S21 Ultra's larger sensor and advanced zoom capabilities allow for greater detail and flexibility, especially for distant subjects. Its low-light performance is also robust.
• Video Recording and Audio: Both phones support 4K video recording, with the iPhone 12 offering HDR video with Dolby Vision up to 4K at 30 frames per second. The Galaxy S21 Ultra 5G also records 4K video at 60 frames per second. Both devices provide clear audio recording and offer good speaker output for media consumption.